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Designing Hexagonal Architecture with Java

You're reading from   Designing Hexagonal Architecture with Java An architect's guide to building maintainable and change-tolerant applications with Java and Quarkus

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Product type Paperback
Published in Jan 2022
Publisher Packt
ISBN-13 9781801816489
Length 460 pages
Edition 1st Edition
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Author (1):
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Davi Vieira Davi Vieira
Author Profile Icon Davi Vieira
Davi Vieira
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Table of Contents (21) Chapters Close

Preface 1. Section 1: Architecture Fundamentals
2. Chapter 1: Why Hexagonal Architecture? FREE CHAPTER 3. Chapter 2: Wrapping Business Rules inside Domain Hexagon 4. Chapter 3: Handling Behavior with Ports and Use Cases 5. Chapter 4: Creating Adapters to Interact with the Outside World 6. Chapter 5: Exploring the Nature of Driving and Driven Operations 7. Section 2: Using Hexagons to Create a Solid Foundation
8. Chapter 6: Building the Domain Hexagon 9. Chapter 7: Building the Application Hexagon 10. Chapter 8: Building the Framework Hexagon 11. Chapter 9: Applying Dependency Inversion with Java Modules 12. Section 3: Becoming Cloud-Native
13. Chapter 10: Adding Quarkus to a Modularized Hexagonal Application 14. Chapter 11: Leveraging CDI Beans to Manage Ports and Use Cases 15. Chapter 12: Using RESTEasy Reactive to Implement Input Adapters 16. Chapter 13: Persisting Data with Output Adapters and Hibernate Reactive 17. Chapter 14: Setting Up Dockerfile and Kubernetes Objects for Cloud Deployment 18. Chapter 15: Good Design Practices for Your Hexagonal Application 19. Assessments 20. Other Books You May Enjoy

Summary

In this chapter, we revisited the fundamentals of JVM, assessing some of its features related to JIT compilation and AOT compilation. We learned that JIT improves runtime performance, whereas AOT helps boost application startup time, which proves to be an essential feature for frameworks targeting cloud environments, as in this case with Quarkus.

After getting acquainted with some JVM concepts, we moved forward to learn about Quarkus and some important features it offers. Finally, we integrated Quarkus into our already developed hexagonal system topology and inventory. In order to accomplish such an integration, we created a new bootstrap module to act as a bridge between the hexagonal system modules and the development framework. We now know what it takes to integrate Quarkus into a modularized hexagonal application.

In the next chapter, we dive deeper into the integration between Quarkus and hexagonal architecture. We will learn how to refactor use cases and ports from...

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